Pipe pressure test procedure:

feed. Quantitative feeder or chain pipe pressure test will be sent by the root hydraulic machine supporting roller frame, the support roller frame into two test tubes and then the position of the head centerline.

clamped. Fixed pressure test before and after the head position, the tube clamped between the front and rear pressure test head, hold the tube clamping device.

filled with water. By a low pressure pump filled with water to the tube, the tube by means of air pressure in the test head of the unloading valve or discharge valve. The inner tube to be filled with water when the drain air, unloading valve or the exhaust valve is closed.

discharge. Mobile test ram, water is discharged from the pipe, the pipe feeding mechanism with a pull hydraulic press.

Hydrostatic test is the most common, most direct and most reliable way of weld line inspection, is in a variety of hydraulic test machine. When the pressure test, the first pass low-pressure water, filled the entire root steel side by side to make the air, and then to test pressure prescribed way through the booster and stabilize the prescribed time, at the test pressure, when no steel welds and around wet, spray, water leakage or permanent deformation, is considered qualified.

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